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Finding the Fourth Proportional to 531.38, 796.58 and 287.62

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Solution

The fourth proportional to 531.38, 796.58 and 287.62 is: 431.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    531.38 : 796.58 = 287.62 : x
  2. Step 2: Convert to fraction form
    531.38/796.58 = 287.62/x
  3. Step 3: Cross multiply
    531.38x = 796.58 × 287.62
  4. Step 4: Simplify right side
    531.38x = 229,112.34
  5. Step 5: Solve for x
    x = 229,112.34/531.38
  6. Step 6: Final answer
    x = 431.16

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.